Gold-saving machine.



J. T. VOIGT.

GOLD SAVING MACHINE.

APPLICATION men OCT. 22. 1914.

1,1 60,550. Patented Nov. 16, 1915.

ATTORNEY 2 laeasae, 1

i 1T? tea e assesses GOLD-SAVING iaAeHIjnE.

Toelloohom itmayvcoacemr Be it known that 1, JOHN T. VOIGT, gas

I e l f he nited ta e's, es d ng at atj 1 men B c in the c u y of 151 s and State-of Washington, have invented pertain new and useful Improvements in G'oldfSave s/Ma ine ofiiw th fol o ing i a specification;

This invention relates toore concentrato sor amalgamators; I 1 a I a j h bi i te 1s t0 vP duc e=0 11 ally constructed and jefiicient'device oiithis char,-

acter; for the saving of the, ifirieStjfioat-gbld,

for; scouring; i particles of quartz and 1 for ous: metals separating and saving the preci from thetailingsofqiiartz-Inills. t

L The invention consists;in thepnowell con structlon and combination of parts,-.as:lw1ll berhcreinaft-er described and claimed t lnxthe. accompanying dravv1ngs -:F1gure' 1' is av longitudinal vertical section oI"w'appara-- I tusembodymgthepresent lnvention." Fig;

*2 is an end elevation of. the ore distributer shown detached. Fig.1 3 isgailike viewzof the rotary feeder; I

In the drawings; 5x designates a substantially cylindrical drumilwhich is preferably constructed of tas circulanzheadb :andtivo spacedrings 7t and "8 which serve :Wltlltllfi head; to support interposed annular copper plates 9and' 1Q. u'lhep'late9 is'desiraloly of less Width. than the othe rwp'late'. Provided in the head and rings are rabbetsl=12 for thereception'of theends ofsaid-.plates'and,ito prevent'any'leakage at such joints; rabbets 11 a are provided exteriorly of: the pl t t receive packing-s L13,

Withinthe-innerperipheriesof the plates to afford relatively shallow peripheral recesses A and B Withinythedrunir iTh'e ribs7 xand 8 however, are desirably of sizes. to have the former extenda greater distance'into i is a funnelrshaped distrib uter 18 terminalsthe interior of the drum than the other rib.

\ 1 L represent bolts *extendingthrough v flanges provided on the drum head G and, I the ring 8 for securing the druin parts'to "gether,

' The head6 ispm ided vvi th a concentric hub ,6? for the end of ,a horizontal 'shaft15 which is 'journaled in stationary bearing boxes 16. A pulley 17 is mounted-on said shaft for rotatingthe drum, as by means f e d ing belt. t

Extending into the open end of the drum Specification; a Ea eme Said rings are also: provided with -'I1l)$ 7 and -8 tot} )rotrude I ns; P ef rably, in; rp ur tji of blades arranged; as shown in Fig. 2, ito provide :in

teryening slots 20; through which grnaterial is delivered I into the groove A.- The smaller outer end of the distributer 18 is secured to a tubular shaft 21; which is. J mounted in journal bearings, 22 p152. frame 23. ,A spiralz tube 2% "is connected toothe outer; endof shaft l2l, and when rotated :Wlth, the; shaft;

erv s 1:01 sco p, the slime+that isto, say,

I Patehtetlhfovgtifi;191. 5; erp cat mfi c ,q' oherez,191,4 seriarnq. aerator i ilites?atedv re ora-uriemus sands'miXed:

with waterefirom a trough 25. and deliver the-sameinto the: hollowshaft 21. This troughfiand thezffraine 23 a are supported upon a carriage; 26 "w'hich'is movable; axially 5 of the-drum t rpon tI'QCk?Ifli'lS,-EllCh as-27 to enablei the distributors to be Withdrawn from the drum; when: the'latter is to be 7 28-; represents: a pulley; for a; .belt to; rotate thezshaft 21 togetherwi th the distributes l8 1 cleaned.

and the; feeding scoop '24.

:29; is an; annular :gutter inclosing the end of thexdrum andt is, provided With: a spout 30 for discharging the refuse material. from thedrurn intoya waste'trough 31.1 .Tliecgutter 29 is desirably, connected: to said *carriagesovv as .to be movable therewith into and out of operative position. 1 The} inner 'surfaces' of Wall. ofhthe druin,t.are' coated Withfmerr cury to constitute amalgam-plates. mercury may be applied directly to such surfaces prior towoperating the machine or may be suppliedswith the slimeato. be separated therefroni; by itsaflinity for the cop per during the progress .of the "WOlliL theq annular plates 9 and" lOWlllCl'l'fOll'Il. parts of the circular This The operation of the invention is as fol- U? lows :fiWith the various partstof theinachine occupying the relative positions in which they are illustrated-in Fig. 1,. the shafts l5 and'21 are-driven to rotate the drum 5 and t the distributer 18 together with the rotary scoop '24. l/Vhen tli'ev'scoop is thus actuated the auri frous material in the forniof slirne is taken up from the trough 25 into the 1101- 7 low shaftQl whence itisxi npelled to-fioW- into the distributervl8d Byxtrea'son offithe conical shape of the latter it is evidentithat the circumferential spe d thereof 18 greater 1* at. its discharge-end than at its connection with the shaftfhence thecentrifugal force increases in its efiect 'upona the slime as it approaches thelarge end of the distributer. Accordingly, the-slime is delivered intothe peripheral groove A of the drum in a series of relatively thin sheets throughthe interv reason of an accumulation of the slime at the bottom or a tendency to that efiect, dueto the action of the force'of gravity. Hence there is a certainjamount-of attrition be tween the heavier portions of theslime and themercuryto bring the latter into such intimate contact that the metals which have van affinity for the merour y are seized'there;

by to adhere to the wall part 9 in theform of an amalgam. The slime will,however,accu-' mulate in the groove Auntil at the bottom its depth exceeds theeifective' height of the rid e '7 whereupon the li hter iorti'ons of the slime vwill overflow onto plate 10 in groove B where it is spread more thinly over the relativeiy large area of the plate; and whereby the particles of amalgamable'su'b'. stances in the slime which have escaped from thegrooveA are collectedon the amalgamated surface. Eventually the refuse 1 material is discharged over ridge 8 into gut-' ter 29 to pass offby spout 30 and trough 31. 'The invention is found-to belparticularly usefulinf the treatment of"ta1l1ngsor ma-- teria'l which has passed ov'er the concentrating tables of a quartz mlll as affording not only a great saving of gold which has hitherto been lost but by serving to recover comminuted mercury contained in'such tailings. I 1

What I'claim, is t r '1. .In apparatus of the class described, a drum;v rotatable on ahorizontal axis and having intermediate itslength a cylindrical portion formed of an'amalgamable material and circumferentially unobstructed, said drum being closed at one-end and wvith an opening at the other end of less diameter than the aforesaid cylindrical P0111011, andv means extending into the openiend of-the drum adapted to feed auriferous material" directly to the inner perlpheral surface of thedrum, said means being at'all times unoonnected'with respect to the drium and removable therefrom for cleaning the'interior of the drum while the same ,isrotating or OtllQIfWlSB- V I I 2. In apparatus drum rotatable, upon a substantially horizontal axis, said drum being vclosed at one" end and, hav1nga cylindrical portion of the class, described, a

formed of anamalgamable material and circumferentially unobstructed, and means for feeding auriferous material into-the drum, said means being adapted to be insertedinto or removed from the drum through the 'open end of the latter and being likewise ad ustable lengthwise of'thedrum while the same is rotating to deliver the material upon said cylindrical portion and at selected distancesfrom the closed" end of the 3. In apparatus ofthe class described, a drum com arising a cylindrical portion open at one end, and a head rigidly secured to and serving to deserts other end-of .the i drum,1 a substantially horizontal power driven shaft secured at an end thereof to said he'ad'and supporting thedrnm thereatpendently of said head i to feed s materialagainst theperipheral wall ofthe fdrum,

suchfeedingdevices being adapted to be inserted into or withdrawnthrough the open end of the drum, while the latter is rotating 4. In apparatus of'the class described, the combination with arotary drum having a peripheralwall with-a (circular inner sur- 1 face adapted to" be amalgamated, a head closing one end of the drum, a peripheral rib ext'ending into the open endof'the drum,

and a shaft secured to said head andsup-.

porting the drum, or devices for feeding the material'to be treated into the drum, said device's comprising '-a* funnel-shaped distributen 'a hollow shaft secured thereto and serving as a conduit for the material, means to supplythe material to such conduit,

Vmea'ns torotate the drumand'means to rotate saidrdistributer and theconduit together but independently of the drum. c

- 5. In apparatus of the class described, the

V combination with a cylindrical drum having a closed end and, an open" end, and a horizontally disposedlpower driven shaft connected to the closed end but not extending into the drum, ofa removable material feeder introduced into the drum fromEits open endf and adapted tobe positioned for delivering suchniaterial directly against the, peripheral wall of the drum at selected distances from the closed end thereof, and an annular gutter surrounding the open "endof the drumto receiverthe waste material dis? 1 Washington, this. 2nd

denies of "this patent may be obtained foi'lfi ve centseacmty addressing the c m m o O f -6 Washington, D. C. i I i 

